After two days of attempts, bomb squads were able to defuse the array of explosives left behind in the apartment of shooting suspect James Holmes. Police believe Holmes meticulously planned his rampage, spending thousands of dollars on weapons and ammunition that arrived in some 90 packages over the course of several months. Holmes’ online purchases — done with a few keystrokes — included 3,000 rounds of handgun ammunition, 3,000 rounds for an assault rifle and 350 shells for a 12-gauge shotgun. When police disabled his booby-trapped apartment, they found 30 improvised hand grenades and several containers filled with gunpowder and gasoline. At least six other firearms were also retrieved. According to witnesses, a higher death toll may have been avoided because Holmes’ weapon jammed as he fired on the fleeing crowd.